Motiva Enterprises Port Arthur Refinery
Natural gas power plant in Jefferson County, Texas. 276.8 MW of nameplate capacity across 9 generators, operated by Motiva Enterprises LLC.
Also known as EIA plant 50973
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 276.8 MWNameplate
- Generators
- 9 operatingEIA-860M, August 2026
- Operating since
- June 1957First generator online
- Operator
- Motiva Enterprises LLCEIA operator ID 12981
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Jefferson County, TX29.8885, −93.9510
- EIA plant ID
- 50973EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Motiva Enterprises Port Arthur Refinery produces
Free · EIA-923Net generation, 2025
146 GWh
146,415 MWh, final. 1 of 12 months reported
Capacity factor, 2025
71.1%
2024: 68.3%
January to July 2026
1.00 TWh
Provisional
Range, 2015 to 2024
0.1–1.8
TWh a year. Low 2021, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 706,346 | Not reported | 12 of 12 |
| 2001 | 746,914 | Not reported | 12 of 12 |
| 2002 | 671,775 | Not reported | 12 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | 651,065 | Not reported | 12 of 12 |
| 2005 | 665,059 | Not reported | 12 of 12 |
| 2006 | 598,711 | Not reported | 12 of 12 |
| 2007 | 622,125 | Not reported | 12 of 12 |
| 2008 | 519,958 | Not reported | 12 of 12 |
| 2009 | 638,778 | Not reported | 12 of 12 |
| 2010 | 635,273 | Not reported | 12 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | 1,676,689 | Not reported | 12 of 12 |
| 2013 | 1,682,753 | Not reported | 12 of 12 |
| 2014 | 1,656,147 | Not reported | 12 of 12 |
| 2015 | 1,766,055 | Not reported | 12 of 12 |
| 2016 | 1,745,853 | 71.8% | 12 of 12 |
| 2017 | 1,763,276 | 72.7% | 12 of 12 |
| 2018 | 1,784,185 | 73.6% | 12 of 12 |
| 2019 | 1,837,252 | 75.8% | 12 of 12 |
| 2020 | 720,897 | 29.6% | 12 of 12 |
| 2021 | 90,262 | 3.7% | 12 of 12 |
| 2022 | 622,712 | 25.7% | 12 of 12 |
| 2023 | 1,395,576 | Not reported | 12 of 12 |
| 2024 | 1,659,896 | 68.3% | 12 of 12 |
| 2025 | 146,415 | 71.1% | 1 of 12 |
| 2026 (provisional, partial year) | 1,004,309 | 71.3% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
28
million gallons
Consumption, 2024
28
million gallons
Source
Lower Neches Valley Authority Canal
Surface, Fresh. Natural-draft tower
Watershed stress
Low · 0.239
USGS SUI, HUC12 Salt Bayou
12 of 12 cooling months report withdrawal. SUI of the HUC12 containing the plant. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GN31 | Other Gases | 10.0 | June 1962 |
| GN32 | Other Gases | 15.6 | June 1957 |
| GN33 | Other Gases | 25.5 | June 1978 |
| GN34 | Natural Gas Fired Combustion Turbine | 18.8 | June 1970 |
| GN35 | Natural Gas Fired Combined Cycle | 40.5 | December 1983 |
| GN41 | Natural Gas Fired Combined Cycle | 41.6 | December 2011 |
| GN42 | Natural Gas Fired Combined Cycle | 41.6 | November 2011 |
| GN43 | Natural Gas Fired Combined Cycle | 41.6 | November 2011 |
| GN44 | Natural Gas Fired Combined Cycle | 41.6 | October 2011 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Motiva Enterprises LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Motiva Enterprises Port Arthur Refinery
How much power does Motiva Enterprises Port Arthur Refinery produce?
Motiva Enterprises Port Arthur Refinery reported 146,415 MWh (146 GWh) of net generation in 2025, a 71.1% capacity factor on 276.8 MW of nameplate capacity. From January to July 2026 it reported 1.00 TWh, which is provisional. 1 of 12 months were reported for 2025.
Where is Motiva Enterprises Port Arthur Refinery?
Motiva Enterprises Port Arthur Refinery is in Jefferson County, Texas, at 29.8885, −93.9510. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Motiva Enterprises Port Arthur Refinery?
EIA-860M for August 2026 lists Motiva Enterprises LLC as the operator (EIA operator ID 12981). The operator is not always the owner.
When did Motiva Enterprises Port Arthur Refinery start operating?
Its first generator began operating in June 1957, according to EIA-860M.
Does InfraMap have power prices for Motiva Enterprises Port Arthur Refinery?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Motiva Enterprises Port Arthur Refinery, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page